Big Horn County frequencies
Big Horn County (00U) in Hardin, MT has no control tower, so nobody is sequencing traffic here — you announce your own position on 122.8. Every frequency below is in the order you tune it. · Open on the map
All of Big Horn County — runways, frequencies, charts and live weatherBefore taxi
- ASOS/AWOS 118.325
- An automated weather station reading the field conditions aloud — wind, visibility, ceiling, temperature and altimeter. It replaces ATIS at a field with no controller to record one. Get the altimeter setting before you descend below the transition altitude.
Taxi & takeoff
- CTAF 122.8
- The common frequency pilots use to announce themselves to each other at a field with no operating control tower. Nobody is controlling traffic — you are self announcing. Report your position and intentions on entry and on each leg of the pattern, and listen well before you transmit.
- UNICOM 122.8
- A ground station run by the FBO rather than the FAA, for fuel, parking and airport services. Use it for services. Where the field has no separate CTAF, the same frequency doubles as the advisory frequency.
Also
- Flight service 132.425 (HIGH)
- Flight Service handles briefings, flight plans and en route advisories, reached here through a remote outlet. Open and close VFR flight plans, and get updated weather in the air. 1-800-WX-BRIEF reaches the same specialists from the ground.
What to say on 122.8
Nobody is sequencing traffic at 00U, so every call is you telling other aircraft where you are. Open and close with the field name so a pilot tuned to a shared frequency knows which airport you mean — 122.8 is not unique to Big Horn County.
- Inbound, 10 miles out
Big Horn traffic, Skyhawk one two three four five, one zero miles south, inbound landing runway 08, Big Horn.
- Entering the pattern
Big Horn traffic, Skyhawk one two three four five, entering left downwind runway 08, Big Horn.
- Before taking the runway
Big Horn traffic, Skyhawk one two three four five, departing runway 08, Big Horn.
Pattern direction is not always left here — check the 00U traffic pattern before you announce a leg. The Chart Supplement is authoritative if 00U publishes a call name that differs from the airport's. Full guidance →
By procedure & sector (1 more)
| 317.45 | MILES CITY RCAG (HIGH) |
|---|
Every 00U frequency, as one table
| ASOS/AWOS | 118.325 |
|---|---|
| CTAF | 122.8 |
| UNICOM | 122.8 |
| Flight service | 132.425 (HIGH) |
Frequently asked
What is the CTAF at 00U?
Big Horn County is non towered. The common traffic advisory frequency is 122.8 — announce your position and intentions on entry and on each leg of the pattern.
What is the ASOS/AWOS frequency at 00U?
ASOS/AWOS at Big Horn County is 118.325. It is an automated broadcast, so there is no letter to report — just take the altimeter setting and wind.
More about 00U
Frequencies from FAA NASR. For planning and education only; always verify against official sources.
Something here wrong or out of date? Report a data problem.